What was before the Supreme Court in Otter Tail is not the issue presently before us: whether determination of the relevant geographic market was for the court or for the jury. Although in Otter Tail the relevant geographic market coincided with the aggregate of the towns in the defendant’s service area, there is in that opinion no indication that its definition was achieved as a matter of law.

Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide …, loc. 1237